Edmund Beecher Wilson

Edmund Beecher Wilson (19 October 1856-3 March 1939) was an American zoologist and geneticist who, along with Nettie Stevens, discovered sex chromosomes in 1905.

Biography
Edmund Beecher Wilson was born in Geneva, Illinois in 1856, and he graduated from Yale University in 1908. From 1885 to 1891, he worked as a Professor at Bryn Mawr College, the sister college of the University of Johns Hopkins. In 1905, Wilson discovered sex chromosomes; at the same time, Bryn Mawr alumna Nettie Stevens also discovered the chromosomes in mealworm sperm. He went on to publish several papers on embryology, and he died in 1939. The E.B. Wilson Award is named after him.